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Finding the Fourth Proportional to 970,891.07, 1,340,404.47 and 863,163.54

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Solution

The fourth proportional to 970,891.07, 1,340,404.47 and 863,163.54 is: 1,191,676.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,891.07 : 1,340,404.47 = 863,163.54 : x
  2. Step 2: Convert to fraction form
    970,891.07/1,340,404.47 = 863,163.54/x
  3. Step 3: Cross multiply
    970,891.07x = 1,340,404.47 × 863,163.54
  4. Step 4: Simplify right side
    970,891.07x = 1,156,988,267,357.02
  5. Step 5: Solve for x
    x = 1,156,988,267,357.02/970,891.07
  6. Step 6: Final answer
    x = 1,191,676.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.